64821602111339 has 2 divisors, whose sum is σ = 64821602111340. Its totient is φ = 64821602111338.

The previous prime is 64821602111311. The next prime is 64821602111347. The reversal of 64821602111339 is 93311120612846.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64821602111339 - 2²⁸ = 64821333675883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64821602111293 and 64821602111302.

It is not a weakly prime, because it can be changed into another prime (64821602111239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32410801055669 + 32410801055670.

It is an arithmetic number, because the mean of its divisors is an integer number (32410801055670).

Almost surely, 2^{64821602111339} is an apocalyptic number.

64821602111339 is a deficient number, since it is larger than the sum of its proper divisors (1).

64821602111339 is an equidigital number, since it uses as much as digits as its factorization.

64821602111339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 64821602111339 in words is "sixty-four trillion, eight hundred twenty-one billion, six hundred two million, one hundred eleven thousand, three hundred thirty-nine".